The Wings of Desire
I had seen it in the theater back in the early days of my film-school epiphany, and the effect lasts to to this day on DVD. There's so much about this film to love that I don't even know where to begin.
Maybe just one thing to say... Peter Falk kicks ass in this one.
There's way more than just that to be said, so I'll try to say something a little more intellectual later, but I stand by what I just said.